When traveling in Europe whenever you are visiting a restaurant or a museum, try to use their WC facilities if at all possible. Typically they are maintained and are free. But sometimes you are just walking around the town and find you have a need. If you find yourself in this predicament, it is helpful to know where to “go”.
It is always wise to carry change with you for this purpose since many public restrooms charge for their use, supplies and cleaning. Some of the more primitive WCs do not supply paper or washing facilities, so I keep a supply of tissues and hand sanitizer in my camera bag, just in case.
In Lindau, near the popular harbor, public bathrooms can be found at the train station. On the opposite side of the island, at the large parking lot on Uterweg is a large public bathroom. It costs 50 cents to enter but it is relatively clean and well supplied.
Hope this helps!
Diebsturm (the thieves' tower) was a watch tower built in 1380 to protect the Medieval wall. Very funny is the long hair that fall down from the window like the fable.